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Item 66771
SAFET
y
Op
ERA
TION
M
AINTENAN
c
E
SETU
p
•
Speed Rating
- The speed rating denotes the
speed at which a tire is designed to be driven for
extended periods of time.
This does not indicate
that the vehicle or rims can safely reach or
maintain that speed.
These ratings are listed in
Table B. (The markings on the example tire diagram
show M. The markings on your tire may differ.)
code MpH
F
50
G
56
J
62
K
68
L
75
M
81
code MpH
N
87
P
94
Q
100
R
106
S
112
T
118
code MpH
U
124
H
130
V
149
Z
149
W
168
Y
186
Table B: Tire Speed Rating codes
Note:
You may not find this information on all
tires because it is not required by law.
•
Tire ply composition and Materials Used
-
The number of plies indicates the number of layers
of rubber-coated fabric in the tire.
In general, the greater the number of plies, the more
weight a tire can support. Tire manufacturers
also must indicate the materials in the tire, which
include steel, nylon, polyester, and others.
•
Maximum permissible Inflation pressure
-
This number is the greatest amount of air
pressure that should ever be put in the
tire under normal driving conditions.
